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Reports interface methods that clash with the <b>protected</b> methods <code>clone()</code> and <code>finalize()</code> from the <code>java.lang.Object</code> class.
<p>In an interface, it is possible to declare these methods with a return type that is incompatible with the <code>java.lang.Object</code> methods.
  A class that implements such an interface will not be compilable.
  When the interface is functional, it remains possible to create a lambda from it, but this is not recommended.</p>
<p>Example:</p>
<pre><code>
  // Warning: this interface cannot be implemented
  // by any class, only by a lambda or method reference
  interface MyInterface {
    double clone();
  }
</code></pre>
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